Cosmetics & Skin Photoprotection

Solar Radiation & Optical Filters

Solar radiation is a great source of energy creating life on our planet. But it also has the power to cause critical damage to biological systems such as human skin. Oxidative stress can lead to the development of skin disorders such as cancer. We are interested in designing novel hybrid systems that are capable of providing protection and minimising the effects of the oxidative stress. We are also confident that a better understanding of the process itself can provide a solution and improve quality of life. Our research is in collaboration with Dr Christine Bösch and her group, who are based in the School of Food Science and Nutrition.

Skin Protection

The skin is responsible for protection, regulation and sensation, within the human body. Solar radiation, which consists of ultraviolet (10%), visible (40%) and infrared (50%) light, is known to damage the skin. Reactive oxygen species (ROS) are broken down by aerobic organisms to maintain proper cell function. Excessive production of ROS can tip the balance of oxidants and antioxidants in cells, leading to oxidative stress, cell damage and death. This, in turn, can lead to skin ageing and cancer.

Topical products such as sunscreens have been developed to protect against solar radiation, concentrating specifically on UVA and UVB. These often use titanium dioxide, in its rutile form, to reflect UV radiation. By modifying TiO2 (doi) there is potential to extend its optical properties to absorb both UV and visible light. Such a material might function as an active ingredient in sunscreen formulations.